From Greek: para allelois beside one another. Lines are parallel if they lie in the same plane, and are the same distance apart over their entire length. Try this Drag any orange dot at the points P or Q. As the line PQ moves, the line RS will remain parallel to it. Parallel lines remain the same distance apart over their entire length.
It is important to know whether the cancer has got into the lymph glands because they are one of the main mechanisms by which the cancer can spread to other parts of the body. As long as the spread is just to the lymph glands near to the colon then this would indicate Stage 3 cancer.
Cancer in the lymph nodes Back to top. Cancer can develop in the lymph nodes in two ways. It can start there as a primary cancer, or it can spread into the lymph nodes from a primary cancer elsewhere in the body. Cancer that starts in the lymph nodes is called lymphoma.If cancer spreads into the lymph nodes from another part of the body, this is known as secondary or metastatic cancer.econdary cancer in the lymph nodes. Secondary cancer in the lymph nodes is when cancer cells have spread to the lymph nodes from a cancer that began elsewhere in the body. We have separate information about the different types of lymphomas | .